Enable label-based image test and use free runner to run lint (#2864)

### What this PR does / why we need it?
- Enable label-based image test and use free runner to run lint
- soft revert
26f388ba08

### Does this PR introduce _any_ user-facing change?
No

### How was this patch tested?


- vLLM version: main
- vLLM main:
404c85ca72

Signed-off-by: Yikun Jiang <yikunkero@gmail.com>

.github/workflows/vllm_ascend_test.yaml

@@ -43,9 +43,8 @@ jobs:
     uses: ./.github/workflows/pre-commit.yml
 
   changes:
-    runs-on: linux-amd64-cpu-0
-    container:
-      image: swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/cann:8.2.rc1-910b-ubuntu22.04-py3.11
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-latest
     outputs:
       e2e_tracker: ${{ steps.filter.outputs.e2e_tracker }}
       ut_tracker: ${{ steps.filter.outputs.ut_tracker }}